Ventilator.



F. J`. SGHUMAGHER- VENTILATOB.`

APPLIGATION FILED 11An.2,1911.

1,013,322. Patented Jan..2,1912.

IN VEN TUR 3 1 I j @MMM l l y W MM Ml i` l i AroRNY FREDERICKJ.SGHUMCHER, OF SAN FRANCISCO, CALIFORNIA.

VENTILATOR.

Specification of Letters Patent.

Patented Jan. 2,1912.

Application led March 2, 1911. Serial No. 611,933.

To all lwhom t may concern.' .Be it known that IfFREDEnicK J. SCHU-MACHER, a citizen of the United States, residing at San Francisco, inthe county of San Francisco and State of California, have invented newand useful Improvements in ventilators, `of which the following is aspecification.

'Ihe present invention relates to improvements in ventilators such asare used in prism glass windows.

The object of the invention is to provide means for pivot-ing theventilator sash upon the ventilator frame which willpermit said sash toswing freely in said frame, so that there is no danger by said swingingof breaking or wrenching off the pivots therefor; also which willprovide a greater bearing surface for said pivots, whereby the sash isrendered more durable; also such as to render it comparatively easy toremove the sash from the Ventilating frame when desired.

In the accompanying drawings, Figure 1 is an inside view of my improvedventilator closed; Fig. 2 is an outside view of the same; Fig. 3 is avertical section of the same on the line 3 3 of Fig. 2, partly open;Fig. 4L is a top plan view of a modified form of ventilator frame, theglass being omitted; Fig. 5 is an enlarged sectional view on the line 55 of Fig. 4.

Referring to the drawing, 1 indicates a prism light window in which'isinserted a ventilator frame 2, rectangular in form. The outer surfacesof the top and the upper halves of the vertical sides of said ventilatorframe are,` vas shown at 3, extended inwardly, or over the correspondingvportions of the ventilator sash 8, and, conversely, the outer surfacesof the bottom and the lower halves of the vertical sides 7 of said sashare, as shown at 9,` extendedoutwardly, so as to overlie thecorresponding portions ofthe ventilator frame. To the outer surfaces ofthe vertical sides of the ventilator frame at the lowest ends `of saidinward extensions therefrom, are secured eyes or bearings 4, and,similarly, to the upper half of the sash swinging inward and the lowerAhalf swinging outward. This l form of pivot for the sash in aVentilating frame I consider an important feature of my invention.

Heretofore, so far as I am aware, it has been the practice to pivot thesash within the frame by means of pivot pins inserted in the edges ofthe sides of said sash and frame. The objection to this construction isthat it does not permit the sash when opened to be drawn downward belowthe center, and if much strain be placed upon the sash in drawing itdownward it will break or wrench 0E these pivot pins. To avoid this ithas been customary to provide chains or other means for limiting thedownward movement of the sash in opening the ventilator. But thesedevices are objectionable on account of the extra expense which theyinvolve, and

for other reasons.

Y By my present construction of pivots, the ventilator can be fullyopened to any extent without the least strain upon the pivotalmechanism. A further advantage attendant upon this construction is thatI provide a large extent of bearing surface, and therefore the life ofthe device is proportionately prolonged. A further advantage is that byunsoldering the eyes or bearing which are4 connected directly to thesash the sash can readily be removed from the Ventilating frame wheneverdesired. The outer surfaces of the sides of said frame and sash are madeof considerable width to form stops for engaging respectively thecorresponding portions of the sash and frame. On the inner surface ofthe bottom of the Ventilating frame is secured a horizontal strip 10 ofconsiderablewidth which extends to a sufficient height above the bottomof the sash as to render the same perfectly water-tight, in case anywater should find its way past the upper portion of the sash. i

The means for opening and closing the Ventilating sash consists of apiece of spring wire 11 bent back uponitself, the lower portion beingsecured to the top of the sash,

while'the upper portion is free and is adapt- I claim Y In combinationwith a ventilator sash, a ventilator frame, the outer surfaces of theupper halves of the vertical sides of which are extended inwardly orover the corresponding marginal portions of the ventilator sash, theouter surfaces of the lower halves of the vertical sides of theventilator sash being extended outwardly or over the correspond/ingportions of the ventilator frame, eyes or bearings secured respectivelyCopies ofthis patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

